The Big Bang Choose one: A. began with all of the known Universe concentrated in an infinitesimally small point. B. occurred about 2.2 million years ago. C. is the explanation for how the planets in the Solar System developed. D. had very little energy after the first instant.

Which of the following statements are evidence that gases do not always behave ideally? check all that apply.? a. co2 gas becomes dry ice (solid co2) at 1 atm and –78.5 °c. b. when two gases are mixed, they follow dalton\'s law of partial pressures. c. at 4 k and 1 atm, helium is a liquid. d. it is impossible to compress a gas enough so that it takes up no volume.